| 摘要: |
| 在雷达中频数字信道化中为了简化实现多种带宽的设计要求，提出了数字变带
宽设计方法改变接收信道的带宽。首先，与传统的模拟变带宽的设计方法比
较分析表明，该方法具有降低多带宽接收信道设计复杂程度的优点；然后，通过建立理论模
型，对其进行仿真和分析,理论原理可行。最后通过实测某雷达回波信号进行验证，仿真结果和实测结
果基本一致。结果表明，该方法不影响接收信道输出信噪比，同时又能简单实现接收信道的
多种带宽改变，具有可行性和工程实用性。 |
| 关键词: 雷达接收机 中频数字信道化 数字变带宽 |
| DOI： |
|
| 基金项目: |
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| Radar digital IF channelized design based on digital bandwidth adjustment |
| YANG Sheng-hua,LIANG Zhi-xiao,LEI Yun |
| () |
| Abstract: |
| To simplify radar IF digital receiver design which needs various bandwidth,a dig
ital-bandwidth adjustment method is proposed to change
the receiver′s bandwidth.Firstly,this method and conventional analog-bandwidt
h adjustment are compared and analyzed to show the advantage in reducing variable
bandwidth receiver design complexity.Then this method is proved to be feasible
by modeling and simulating.Finally,it is validated by measuring a radar return signal
on the spot,and the experimental data is basically in accordance with that o
f simulation.The results shows that the method doesn′t affect receiver output S
NR(Signal-to-Noise Ratio) and can simply complishes many bandwidth adjustments in di
gital domain,so it possesses feasibility and engineering applicability in real r
adar channel design. |
| Key words: radar receiver digital IF channelized digital bandwidth adjustment |
《电讯技术》编辑部 